Steaivi-generator and waterxc



(No Model.) 2 Sheets-Sheet 1L J. J. BUSH. STEAM GENERATOR AND WATER GIRGULATGR.

' No. 549,992, Patented Nov. 19, 1895.

J0 BUSHL' w w I ATTORNEY (No Model. I 2 Sheets-Sheet 2. J.J.BUSH. STEAM GENERATOR AND WATER CIRGULATQB- N0. 549, 99Z. Patentm NW. 19, L895.

. I 1 WITNESSES: 05/

JAMES J. BUSH, OF NEWARK, NEYV JERSEY.

STEAM-G ENERATOR AND WATER-CIRCLE LATOR.

SPECIFICATION forming part of Letters Patent No. 549,992, dated November 19, 1895.

Application fil d June 14,1895. Serial No. 552,788. (No man.)

To all whom it may concern.-

Be it known that I, JAMES J. BUSH, a citizen of the United States, residing at Newark, in the county of Essex and State of New J ersey, have invented certain new and useful Improvements in Steam-Generators and \Vater-Oirculators; and I do hereby declare the following to'be a full, clear, and exact description of the invention, such as will enable others skilled in the art'to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of. reference marked thereon, which form a part of this specification.

My present invention has reference to improvements in steam-generators and watercirculators, and is designed to provide an efficient and simply-constructed device, the invention having for its main purpose to prevent incrustation of the shell of the boiler; to prod uce a constant and positive circulationof the water through the same; to provide a means whereby when the fire is hottest on the one side of the furnace a positive circulation of the-water must result, the construction being such as to prevent the backing up of the steam in the generator-pipes, whereby superheated steam is caused and results in the burning out of the pipes, and, finally, to heat the water in the boiler to a high degree and generate steam more rapidly than under ordinary circumstances, all of which is accomplished by an 'economicaland simply-constructed device without adding greatly to the cost of the boiler.

In my previousLettcrs Patentv Nos. 447,865

and 447,866, granted March 10, 1891, I have shown a const-ructionof water-heater and steam-generator oonsisiin of a series of pipes underneath the boiler, (arranged in pairs,)

each series being in communication at one end through couplings, which are rectangular in shape, and communicating at the through a water-box, both of said series (of pipes leading into one and the same chamber in said water-box. I I have found that the construction of couplings andthe water-box em-.,

ployed and as set forth innmy. said previous Letters Patent hereinabove mentioned is imlnect'ed with the header. .tal section of my novel formof partitioned boiler, thereby generating superheated steam in the pipe-sections and finally resulting in the burning out of the pipes. In my present invention I have successfully overcome these serious difliculties, and the invention therefore consists, first, in the novel construction of steam-generator and water-circulator as a complete device; second, in the novel construction of expansion-header provided with slip-joints; third, in the novel construction of a partitioned water-box; fourth, in the novel arrangement and combinations of these parts with certain other parts to form an efficient and successfully-operating steam-generator, and, finally, the invention consists in the details of construction of certain other parts and such minor arrangements and combinations of parts, as will be hereinafter fully described, and finally embodied in the clauses of the claim.

The invention is illustrated in the accompanying sheets of drawings, in which-- Figure 1 is a perspective view of a boiler and the improvement applied thereto.' Fig. 2 is a front end View, and Fig. 3 a back end View, of the boiler and steam generator and Water-circulator. Fig. 4is a plan View of the sections or series of piping, expansion-headers, "water-box, and the various connections comprising my-novel form of steanngenerator and Water-circulator. Fig; 5 is a horizontal section of one of the expansion-headers and itsslip-joints to allow for the expansion and contraction of the generator-pipes con.- Fig. 6 isa horizonwater-box conneoted with-the heater or genei r'pipes, and Fig. .7is aside-view of a novelformof elbow used in connection with my present invention.

Similar letters of reference are employed in each of the above described views toindicatc corresponding parts. 7

Referring to said drawings, b indicates a the limited space at the lowest portion at the 1 suitable construction of boiler, with parts of the side walls of the furnace broken away, i threaded teats or enlargements J-on the said. clearly illustrating the arrangement and applicat ion of my novel form of steam-generalor and watcr-circulator to this type of boiler.

My novel form of steam-generator and watcr-circulat'or is arrangedwithin the combustion or flame chamber of the furnace in close proximity to the boiler, and consists, essentially, of a series of heater or generatorpnn-s 1r. arrangtal in two series to both sides of a central dividing-line through the middle of. the boiler, as clearlyillustrated in Fig. 4. For the sake of clcarness in the followingdescription I shall hereinafter designate these two series of; pipes by the reference-letters A and A. The pipes in each series A and A communicate at the front with a suitable waterbox c, having, a centrally-placed wall or partition c forming two chambers and e, the pipes a in the series A being connected. with openings or holes 0 in the wall. of the chamber c and the pipes u in the series A being connected with openings or holes c in the wall of the chamber At the rear said pipes connect with the slip-joints e on the suitable teats of a pair of expansion-headers d, snbstan tially as illustrated in Figs. -t and Said headersd are open at their ends near the center line of the boiler, being provided with suitable nipples d or other suitable means for connecting the ends (I of the headers (Z with an opening" f 2 in the speciallyconstructed elbow-fittings f and f. In the upper openings of the respective elbows are fitted short pieces of piping f and f (see Fig. 4,) secured in the end of the boiler to establish direct communication with the lower part of the said boiler. Directly connected with the lower openings f of said elbows are the vertical pipes g and g, which communicate with the mud-drum h, as clearly illustrated in Figs. 1 and 8.

My novel construction of elbow (illustrated more particularly in Fig. 7) permits me to tap the boiler l) at the lowest possible point, on both sides of the hand hole I), see Fig. 23,) and connect the same with the ends of the comparatively-large expansion-headers without interfering with the utility of the hand-hole and the parts of the appliance applied to the boiler. In my previous patents hereinabove mentioned the expansion joints set; forth therein are cumbersome and useless in that, owing to the arrangement of the conneetiiigpipes in the cent-er of the joint-fittings, the latter are brought too closelyto the hand-hole in the end of the boiler and interfere with the utility of the said hole, preventing the work man from removin the cover over said hole when necessary. This is a very serious objection and has been successfully obviated by the use of my novel form of elbows (illustratedin Fig. 7) and the manner of connecting the same with the cxpansionheaders (1.

Each pipe a in the scriesAand Ais loosely arranged in an opening in certain screw- .headers, and a steam-tight joint is made by slippin the perforated caps I" over the ends of said pipes 11 and screwing tln;m down upon said teats, with a suitable packing behind said caps, in the manner snbsta tiallyas illus tratcd in Fig. 5. The firontends of said pipes u being permanently fixed. in the llUh-s or openings in said partitioned water-box 1- will cause said pipes to cxpandin a direction to ward the back of the boiler, said. pipes slip-- ping back and forth in the slip-joints of said headers when they expand orcont-ract, as will be readily UlHltEl'hiOUfl.

As has been previously stated, the pipes] and are in'coinmunication with the lower part of the boiler and the chambers c and 1" are respectively connected by means of pipes and l.: with the upper portion of the boiler above the water-line thereof.

1 have found by experience that when the two series of pipes A and A eommnnicat o with but one and the same chamber in the watew box, when the fire is hottest on one side of the furnace a circulation of water will be caused from the section of pipes on the hottest side to the series of pipes on the colder side, resulting in generating superheated steam in the pipes and hence causing the early destruction of the same.

\Vhen the water-box. is provided with a partition, forming chambers, and with ettch of which but one series or section of pipes 11. is in direct communication, an independent circulation of the water wi] 1 be caused through each series of pipes, its respect ive chamber in the water-box, and finally through the boiler and back into the series of pipes, irrespective of the intensity of the heat of the tire at any point of the furnace, and a perfectly-operating device for the purposes for which'it' is intended will be the result.

Of course it will be understood that each. series of pipes A and A may comprise therein any suitable number of pipes o,.u ual ly ra n ing from two to eight pipes in each series. II will also be understood that the water-box may be provided with several partitions, it"

desirable, forming withiii said box more than two chambers.

modifications of the construction shown and described may be made without departing from the scope of my prese t invention, and I therefore do not limit my invention to the exact arrangements and combinations of the parts herein shown.

By my novel arrangement and combinationsot' parts I have virtually devised two imlepcmlentlyoperating steam generators and unter-circulators used in connection with one boiler, resulting in a positive, continu: ous, direct, and unobstructed flow of the water through the sections or series of pipes, chambers in the water-box, and the boiler, the water being taken at the lower part at one end and being delivered at the top of the boiler, whereby the circulation is such to prevent any deposition of dirt, sediment, or other foreign substances on the inner surface of the boiler, all such substances being duly deposited in the mud-drum.

Having thus described my inventiomwhat I claim is 1", The combination, with a boiler, of a steam generator and water circulator, consisting of a series of pipes, as A and A, arranged immediately below the boiler and in the fire box or flame-chamber, communicat in g with the lower. portion of the rear end of the boiler,and at the otherend of said pipes, a partitioned water box forming separate chambers with which said series of pipes are independently connected, and means for establishing communication between said box and the boiler at or near the top thereof,sub-

stantially as and for the purposes set forth.

2. The combination, with a boiler, of a steam generator and water circulator, consisting of a series of pipes, as A and A, ar-

anged immediately below the boiler and in the fire box or flame-chamber, communicating at one end through expansion headers, as (I, having slip joints 6, and a pipe at one end of each header which communicates with the boiler at or near the bottom thereof, and at the other end of said series of pipes, a partitioned water box forming separate chambers with which said series of pipes are independ' ently connected, and pipesconnected with said box for establishing communication between said box and the boiler at or near the 1 top thereof, substantially as and for the poses set forth.

3. The combination, with a boiler, of a steam generator and water 'circulator, consisting of a series of pipes, as A and A, arranged immediately below the boiler and in the fire box or flame-chamber, communicating at one end throughexpansion headers, as (Z, having screw-threaded teats (1 a perforated cap a on eachteat and a packing in. each cap, forming slip joints, a pipe at one end ofeach header which communicates with the boiler at or near the bottom thereof, and at the other end of said series of pipes, apartitioned water box forming separate chambers with which said series of pipes are independently connected, and pipes connected with said box for establishing communication between said box and the boiler at or near the top thereof,substantiallyas andfor the purposes set forth. 7

4. 'lhe combination, with a boiler, of a stcSi-m generator and water circulator, coni sisting of a series of pipes, as A and A, ar-' rahged immediately below'the boiler and in the fire box or flame-chamber, communicating at one end through expansion headers, as d, having slip joints 6, an elbow at one end of each header, said elbows having openings f f and f pipes in said elbows connecting them with the boiler at or near the bottom thereof, pipes also connecting said elbows with a mud drum, and at the other end of forming separate chambers with which said lishing communication between said box and the boiler at or near the top thereof, substantially' as and'for the purposes set forth.

5. The combination, with a boiler, of a steam generator and water circulator, consisting of a series of. pipes, as A and A, arranged immediately below the boiler and in (1, having slip joints e,- and a pipe at one end of each header which communicates with the boiler at or near the bottom thereof, and means at the other ends of said series of pipes, for establishing communication at or near the top of the boiler, substantially as and ,for. the purposes set forth,

6. The combination, with a boiler, of a steam generator and water c'ireulator, consisting of a series of pipes, as A andA, arranged immediately below the boiler and in the fire box or flame-chamber, communicating at one end through expansion headers, as 11, having screw-threaded teats d a perforated. cape on each teat, and a packing in each teat, forming slip joints, anda pipe at one end of each header which communicates with the boiler at or near the bottom thereof, and means at the other ends of said series of pipes, for establishing communication at or near the top of the boiler, substantially as and for the purposes set forth.

7. The combination, with a boiler, of a steam generator and Water circulator, consisting of a series of pipes, as A and A, arranged immediately below the boiler and in the fire box or flame-chamber, communicating at one end through expansion headers (I, having slip joints e, an elbow at one end of each header, said elbows having openings f, f and f pipes in said elbows for connecting them with the boiler at or near the bottom thereof, pipes also connecting said elbows with'a mud drum, and meansat the other ends of said series of pipes, for establishing communication at or near the top of the boiler, substantially as and for the purposes set forth.-

8. The" herein described header d, for a steam generator and water cireulator, having -e on said teats, and apaeking between said teats and caps, and an opening (2 in one end said series of pipes, a partitioned water box series of pipes are independently connected, and pipes-connected with said box for estabscrew-threaded teats, as (1 perforated caps.

the fire box or flame-chamber, communicating at one end through expansion headers, as

of said header, adapted to receive a nipple; I In testimony that I claim the invention set substantiallyas and forthe purposes setforth. i forth above I have hereunto set myhand this 9. The herein described water box a, for a 13th day of June, 1895. steam generator and watereiroulator, having JAMES J. BUSH.

.5 a partition or Wall 0 integral with the in'n'er Vitnesses:

sides 011 the box forming chambers c and c FREDK. C. FRAENTZEL,

substantiallyasand forthepurposes setforth. WM. II. CAMFIELD, Jr. 

